| Name | Format | Duration | Size | Date | |
|---|---|---|---|---|---|
| opanil01.wav | Waveform Audio File Format | 0.03s | 2KB | 1997-02-06 | |
| oprint01.wav | Waveform Audio File Format | 0.04s | 3KB | 1997-02-06 | |
| oprola01.wav | Waveform Audio File Format | 0.04s | 3KB | 1997-02-12 | |
| opvol01.wav | Waveform Audio File Format | 1s | 13KB | 1997-02-11 |